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drm: add atomic_get_property 

Since we won't be using the obj->properties->values[] array to shadow
property values for atomic drivers, we are going to need a vfunc for
getting prop values.  Add that along w/ mandatory wrapper fxns.

v2: more comments and copypasta comment typo fix

Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rob Clark 2014-12-18 16:01:47 -05:00 committed by Daniel Vetter
parent 40ecc694e1
commit ac9c925616
3 changed files with 115 additions and 0 deletions
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88
drivers/gpu/drm/drm_atomic.c
View File

@ -242,6 +242,32 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
}
EXPORT_SYMBOL(drm_atomic_crtc_set_property);
/**
* drm_atomic_crtc_get_property - get property on CRTC
* @crtc: the drm CRTC to get a property on
* @state: the state object with the property value to read
* @property: the property to get
* @val: the property value (returned by reference)
*
* Use this instead of calling crtc->atomic_get_property directly.
* This function handles generic/core properties and calls out to
* driver's ->atomic_get_property() for driver properties. To ensure
* consistent behavior you must call this function rather than the
* driver hook directly.
*
* RETURNS:
* Zero on success, error code on failure
*/
int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
const struct drm_crtc_state *state,
struct drm_property *property, uint64_t *val)
{
if (crtc->funcs->atomic_get_property)
return crtc->funcs->atomic_get_property(crtc, state, property, val);
return -EINVAL;
}
EXPORT_SYMBOL(drm_atomic_crtc_get_property);
/**
* drm_atomic_get_plane_state - get plane state
* @state: global atomic state object
@ -323,6 +349,32 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
}
EXPORT_SYMBOL(drm_atomic_plane_set_property);
/**
* drm_atomic_plane_get_property - get property on plane
* @plane: the drm plane to get a property on
* @state: the state object with the property value to read
* @property: the property to get
* @val: the property value (returned by reference)
*
* Use this instead of calling plane->atomic_get_property directly.
* This function handles generic/core properties and calls out to
* driver's ->atomic_get_property() for driver properties. To ensure
* consistent behavior you must call this function rather than the
* driver hook directly.
*
* RETURNS:
* Zero on success, error code on failure
*/
int drm_atomic_plane_get_property(struct drm_plane *plane,
const struct drm_plane_state *state,
struct drm_property *property, uint64_t *val)
{
if (plane->funcs->atomic_get_property)
return plane->funcs->atomic_get_property(plane, state, property, val);
return -EINVAL;
}
EXPORT_SYMBOL(drm_atomic_plane_get_property);
/**
* drm_atomic_get_connector_state - get connector state
* @state: global atomic state object
@ -432,6 +484,42 @@ int drm_atomic_connector_set_property(struct drm_connector *connector,
}
EXPORT_SYMBOL(drm_atomic_connector_set_property);
/**
* drm_atomic_connector_get_property - get property on connector
* @connector: the drm connector to get a property on
* @state: the state object with the property value to read
* @property: the property to get
* @val: the property value (returned by reference)
*
* Use this instead of calling connector->atomic_get_property directly.
* This function handles generic/core properties and calls out to
* driver's ->atomic_get_property() for driver properties. To ensure
* consistent behavior you must call this function rather than the
* driver hook directly.
*
* RETURNS:
* Zero on success, error code on failure
*/
int drm_atomic_connector_get_property(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property, uint64_t *val)
{
struct drm_device *dev = connector->dev;
struct drm_mode_config *config = &dev->mode_config;
if (property == config->dpms_property) {
*val = connector->dpms;
} else if (connector->funcs->atomic_get_property) {
return connector->funcs->atomic_get_property(connector,
state, property, val);
} else {
return -EINVAL;
}
return 0;
}
EXPORT_SYMBOL(drm_atomic_connector_get_property);
/**
* drm_atomic_set_crtc_for_plane - set crtc for plane
* @plane_state: the plane whose incoming state to update

9
include/drm/drm_atomic.h
View File

@ -41,18 +41,27 @@ drm_atomic_get_crtc_state(struct drm_atomic_state *state,
int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
struct drm_crtc_state *state, struct drm_property *property,
uint64_t val);
int drm_atomic_crtc_get_property(struct drm_crtc *crtc,
const struct drm_crtc_state *state,
struct drm_property *property, uint64_t *val);
struct drm_plane_state * __must_check
drm_atomic_get_plane_state(struct drm_atomic_state *state,
struct drm_plane *plane);
int drm_atomic_plane_set_property(struct drm_plane *plane,
struct drm_plane_state *state, struct drm_property *property,
uint64_t val);
int drm_atomic_plane_get_property(struct drm_plane *plane,
const struct drm_plane_state *state,
struct drm_property *property, uint64_t *val);
struct drm_connector_state * __must_check
drm_atomic_get_connector_state(struct drm_atomic_state *state,
struct drm_connector *connector);
int drm_atomic_connector_set_property(struct drm_connector *connector,
struct drm_connector_state *state, struct drm_property *property,
uint64_t val);
int drm_atomic_connector_get_property(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property, uint64_t *val);
int __must_check
drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,

18
include/drm/drm_crtc.h
View File

@ -312,6 +312,8 @@ struct drm_crtc_state {
* @atomic_destroy_state: destroy an atomic state for this CRTC
* @atomic_set_property: set a property on an atomic state for this CRTC
* (do not call directly, use drm_atomic_crtc_set_property())
* @atomic_get_property: get a property on an atomic state for this CRTC
* (do not call directly, use drm_atomic_crtc_get_property())
*
* The drm_crtc_funcs structure is the central CRTC management structure
* in the DRM. Each CRTC controls one or more connectors (note that the name
@ -371,6 +373,10 @@ struct drm_crtc_funcs {
struct drm_crtc_state *state,
struct drm_property *property,
uint64_t val);
int (*atomic_get_property)(struct drm_crtc *crtc,
const struct drm_crtc_state *state,
struct drm_property *property,
uint64_t *val);
};
/**
@ -499,6 +505,8 @@ struct drm_connector_state {
* @atomic_destroy_state: destroy an atomic state for this connector
* @atomic_set_property: set a property on an atomic state for this connector
* (do not call directly, use drm_atomic_connector_set_property())
* @atomic_get_property: get a property on an atomic state for this connector
* (do not call directly, use drm_atomic_connector_get_property())
*
* Each CRTC may have one or more connectors attached to it. The functions
* below allow the core DRM code to control connectors, enumerate available modes,
@ -532,6 +540,10 @@ struct drm_connector_funcs {
struct drm_connector_state *state,
struct drm_property *property,
uint64_t val);
int (*atomic_get_property)(struct drm_connector *connector,
const struct drm_connector_state *state,
struct drm_property *property,
uint64_t *val);
};
/**
@ -763,6 +775,8 @@ struct drm_plane_state {
* @atomic_destroy_state: destroy an atomic state for this plane
* @atomic_set_property: set a property on an atomic state for this plane
* (do not call directly, use drm_atomic_plane_set_property())
* @atomic_get_property: get a property on an atomic state for this plane
* (do not call directly, use drm_atomic_plane_get_property())
*/
struct drm_plane_funcs {
int (*update_plane)(struct drm_plane *plane,
@ -786,6 +800,10 @@ struct drm_plane_funcs {
struct drm_plane_state *state,
struct drm_property *property,
uint64_t val);
int (*atomic_get_property)(struct drm_plane *plane,
const struct drm_plane_state *state,
struct drm_property *property,
uint64_t *val);
};
enum drm_plane_type {